VGA 640x480 31.5KHz@59.9Hz Specification

General timing

 Screen refresh rate    59.94Hz
 Vertical refresh       31.46875 kHz
 Pixel freq.            25.175 MHz


Horizontal timing (line)

Polarity of horizontal sync pulse is negative.

 Scanline part	Pixels	  Time [µs]
 Visible area    640      25.422045680238
 Front porch      16      0.63555114200596
 Sync pulse       96      3.8133068520357
 Back porch       48      1.9066534260179
 Whole line      800      31.777557100298

Vertical timing (frame)

Polarity of vertical sync pulse is negative.
 Frame part	Lines	Time [ms]
 Visible area    480    15.253227408143
 Front porch      10    0.31777557100298
 Sync pulse        2    0.063555114200596
 Back porch       33    1.0486593843098
 Whole frame     525    16.683217477656



